[TYPO3-project-4-3] improve the errorhandling

[Rupert Germann]

hi,

since the flashmessage API is now changed, here's a new patch which 
applies clean to current trunk.

greets
rupert


Rupert Germann schrieb:
> hi & rfc
> 
> here's a new approach to make the errorhandling fit for final.
> 
> features:
> - if display of errors is enabled and an error occurs this error is 
> displayed as flashmessage
> - BE error flashmessages are displayed by template.php
> - FE error flashmessages are displayed in the adminpanel (see screenshot)
> - to distinguish between production- and debug-mode I introduced a new 
> constant ERRORHANDLER_MODE which depends on the configured exceptionhandler
> - all calls to errorhandling or exceptionhandling are logged to syslog
> to enable the syslog, add this to your localconf.php:
> $TYPO3_CONF_VARS['SYS']['systemLog'] = 'error_log,,2';   
> $TYPO3_CONF_VARS['SYS']['systemLogLevel'] = 0;
> 
> - I introduced a new TYPO3_CONF_VARS parameter:
> $TYPO3_CONF_VARS['SYS']['errorHandlerErrors']
> 
> this parameter configures which errors reach the errorhandler.
> 
> $TYPO3_CONF_VARS['SYS']['exceptionalErrors'] is still used, it 
> configures the errors which should be converted to an exception.
> 
> So we have 2 kind of errors: errorhandler errors and exceptionsl errors.
> 
> The default configuration looks like this:
> 
> 'errorHandlerErrors'=> E_ALL ^ E_NOTICE,
> 'exceptionalErrors' => E_ALL ^ E_NOTICE ^ E_WARNING ^ E_USER_ERROR ^ 
> E_USER_NOTICE ^ E_USER_WARNING
> 
> That means: everything but E_NOTICE reaches the errorhandler. But the 
> errorhandler function throws only an exception on exceptional errors 
> like e.g. E_RECOVERABLE_ERROR.
> 
> 
> INFO:
> this patch contains patch 12130 v5.
> 
> 
> greets
> rupert
> 
> 
> 
> 
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>